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<document ID-DOI="10.11646/phytotaxa.581.1.1" ID-ISSN="1179-3163" ID-Zenodo-Dep="7571550" approvalRequired="50" approvalRequired_for_taxonomicNames="15" approvalRequired_for_textStreams="30" approvalRequired_for_treatments="5" checkinTime="1674712547726" checkinUser="plazi" docAuthor="Dang, Van-Son &amp; Naiki, Akiyo" docDate="2023" docId="43284262FFEDFFAC5AB6FDEB41BFC914" docLanguage="en" docName="phytotaxa.581.1.1.pdf" docOrigin="Phytotaxa 581 (1)" docSource="http://dx.doi.org/10.1094/PDIS-04-22-0755-PDN" docStyle="DocumentStyle:F08184CE06D8A97EA3E6DE35D99648B0.1:Phytotaxa.2014-.monograph" docStyleId="F08184CE06D8A97EA3E6DE35D99648B0" docStyleName="Phytotaxa.2014-.monograph" docStyleVersion="1" docTitle="Lasianthus repoeuensis Pit. 1924" docType="treatment" docVersion="2" lastPageNumber="1935" masterDocId="BF113A1AFF9FFFDE5A3EFFA54026CC48" masterDocTitle="A revision of the genus Lasianthus Jack (Rubiaceae) from Vietnam" masterLastPageNumber="1935" masterPageNumber="1921" pageNumber="1921" updateTime="1674713874756" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>A revision of the genus Lasianthus Jack (Rubiaceae) from Vietnam</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Dang, Van-Son</mods:namePart>
<mods:nameIdentifier type="ORCID">0000-0001-8681-4141</mods:nameIdentifier>
<mods:affiliation>Iriomote Station, Tropical Biosphere Research Center, University of the Ryukyus, 870 Uehara, Taketomi-cho, Yaeyama-gun, Okinawa, 907 - 1541 Japan. &amp; Institute of Tropical Biology, Vietnam Academy of Science and Technology, 85 Tran Quoc Toan Street, District 3, Ho Chi Minh City, Vietnam. &amp; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi, Vietnam. &amp; dvsonitb @ gmail. com; https: // orcid. org / 0000 - 0001 - 8681 - 4141</mods:affiliation>
<mods:nameIdentifier type="email">dvsonitb@gmail.com</mods:nameIdentifier>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Naiki, Akiyo</mods:namePart>
<mods:nameIdentifier type="ORCID">0000-0002-3235-2823</mods:nameIdentifier>
<mods:affiliation>Iriomote Station, Tropical Biosphere Research Center, University of the Ryukyus, 870 Uehara, Taketomi-cho, Yaeyama-gun, Okinawa, 907 - 1541 Japan. &amp; Iriomote Station, Tropical Biosphere Research Center, University of the Ryukyus, 870 Uehara, Taketomi-cho, Yaeyama-gun, Okinawa, 907 - 1541 Japan. &amp; naiki @ lab. u-ryukyu. ac. jp; https: // orcid. org / 0000 - 0002 - 3235 - 2823 * Author for correspondence</mods:affiliation>
<mods:nameIdentifier type="email">naiki@lab.u-ryukyu.ac.jp</mods:nameIdentifier>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>Phytotaxa</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2023</mods:date>
<mods:detail type="pubDate">
<mods:number>2023-01-26</mods:number>
</mods:detail>
<mods:detail type="volume">
<mods:number>581</mods:number>
</mods:detail>
<mods:detail type="issue">
<mods:number>1</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>1921</mods:start>
<mods:end>1935</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:location>
<mods:url>http://dx.doi.org/10.1094/PDIS-04-22-0755-PDN</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">10.11646/phytotaxa.581.1.1</mods:identifier>
<mods:identifier type="ISSN">1179-3163</mods:identifier>
<mods:identifier type="Zenodo-Dep">7571550</mods:identifier>
</mods:mods>
<treatment ID-DOI="http://doi.org/10.5281/zenodo.7571858" ID-Zenodo-Dep="7571858" LSID="urn:lsid:plazi:treatment:43284262FFEDFFAC5AB6FDEB41BFC914" httpUri="http://treatment.plazi.org/id/43284262FFEDFFAC5AB6FDEB41BFC914" pageId="114">
<subSubSection box="[136,1097,590,617]" pageId="114" type="nomenclature">
<paragraph blockId="114.[136,1452,590,688]" box="[136,1097,590,617]" pageId="114">
<emphasis bold="true" box="[136,171,590,616]" pageId="114">57.</emphasis>
<taxonomicName ID-CoL="3SCRM" authority="Pierre ex Pit. (1924: 387)" authorityName="Pit." authorityPageNumber="387" authorityYear="1924" box="[178,742,590,617]" class="Magnoliopsida" family="Rubiaceae" genus="Lasianthus" kingdom="Plantae" order="Gentianales" pageId="114" phylum="Tracheophyta" rank="species" species="repoeuensis">
<emphasis bold="true" box="[178,451,590,617]" italics="true" pageId="114">Lasianthus repoeuensis</emphasis>
Pierre ex Pit. (1924: 387)
</taxonomicName>
<figureCitation box="[772,849,590,616]" captionStart="FIGURE 86" captionStartId="115.[136,229,1903,1925]" captionTargetBox="[169,1414,322,1874]" captionTargetId="figure-68@115.[166,1418,320,1879]" captionTargetPageId="115" captionText="FIGURE 86. Lasianthus repoeuensis Pierre ex Pit. (from Dang 430, VNM): A. Branch with fruits, B. Close-up of young branch and leaves, C. Stipules, D. Abaxial leaf surfaces, E. Young fruits, FG. Fruits." figureDoi="http://doi.org/10.5281/zenodo.7571818" httpUri="https://zenodo.org/record/7571818/files/figure.png" pageId="114">Fig. 86</figureCitation>
(plate),
<figureCitation box="[943,1023,590,616]" captionStart="FIGURE 84" captionStartId="112.[136,229,1809,1831]" captionTargetBox="[180,1405,209,1769]" captionTargetId="figure-24@112.[165,1418,193,1785]" captionTargetPageId="112" captionText="FIGURE 84. Distribution maps of Lasianthus phamhoangii, L. pierrei, L. repoeuensis and L. rhinocerotis subsp. pedunculatus." figureDoi="http://doi.org/10.5281/zenodo.7571810" httpUri="https://zenodo.org/record/7571810/files/figure.png" pageId="114">Fig. 84</figureCitation>
(map)
</paragraph>
</subSubSection>
<subSubSection pageId="114" type="materials_examined">
<paragraph blockId="114.[136,1452,590,688]" pageId="114">
<emphasis bold="true" box="[136,194,630,651]" pageId="114">Type:</emphasis>
<materialsCitation collectingDate="1870-05" country="Cambodia" elevation="800" location="Monitbus Knang Krepoeu" pageId="114" specimenCount="1" typeStatus="holotype">
<collectingCountry box="[219,352,630,651]" name="Cambodia" pageId="114">CAMBODIA</collectingCountry>
.
<location LSID="urn:lsid:plazi:treatment:43284262FFEDFFAC5AB6FDEB41BFC914:CE5EA5AFFFEDFFAC5B59FDD34279CEC3" box="[359,607,630,652]" country="Cambodia" name="Monitbus Knang Krepoeu" pageId="114">Monitbus Knang Krepoeu</location>
,
<quantity box="[614,672,630,651]" metricMagnitude="2" metricUnit="m" metricValue="8.0" pageId="114" unit="m" value="800.0">
<elevation box="[614,672,630,651]" metricMagnitude="2" metricUnit="m" metricValue="8.0" pageId="114" unit="m" value="800.0">800 m</elevation>
</quantity>
elev.,
<date box="[730,827,630,651]" pageId="114" value="1870-05">
<collectingDate box="[730,827,630,651]" pageId="114" value="1870-05">May 1870</collectingDate>
</date>
,
<emphasis box="[835,947,630,651]" italics="true" pageId="114">Pierre 1257</emphasis>
(
<typeStatus box="[957,1043,630,652]" pageId="114">holotype</typeStatus>
P! [P02285238]; isotypes A! [A00096531], P! [P03981159, P03981160])
</materialsCitation>
.
</paragraph>
<paragraph blockId="114.[136,1452,734,1372]" pageId="114">
<emphasis bold="true" box="[136,397,734,760]" pageId="114">
<collectingRegion box="[136,262,734,760]" pageId="114">Specimens</collectingRegion>
examined:
</emphasis>
<materialsCitation collectingDate="2019-10-10" collectingDateMax="2019-10-11" collectingDateMin="2019-10-10" collectionCode="VNM" collectorName="Dang V. S. &amp; Dang" country="Vietnam" elevation="405" location="Dang" municipality="Phu Quoc National Park" pageId="114" specimenCount="1" stateProvince="Kien Giang">
<collectingCountry box="[426,558,734,760]" name="Vietnam" pageId="114">VIETNAM</collectingCountry>
.
<emphasis bold="true" box="[572,692,734,760]" pageId="114">Southern:</emphasis>
<collectingRegion box="[703,950,734,760]" country="Vietnam" name="Kien Giang" pageId="114">Kien Giang Province</collectingRegion>
,
<collectingMunicipality box="[965,1253,734,760]" pageId="114">Phu Quoc National Park</collectingMunicipality>
,
<quantity box="[1268,1343,734,761]" metricMagnitude="2" metricUnit="m" metricValue="4.05" pageId="114" unit="m" value="405.0">
<elevation box="[1268,1343,734,761]" metricMagnitude="2" metricUnit="m" metricValue="4.05" pageId="114" unit="m" value="405.0">405 m</elevation>
</quantity>
elev.,
<date pageId="114" value="2019-10-10">
<collectingDate pageId="114" value="2019-10-10">10 October 2019</collectingDate>
</date>
,
<emphasis box="[307,549,770,797]" italics="true" pageId="114">
<collectorName box="[307,422,771,797]" pageId="114">Dang V.S.</collectorName>
,
<location LSID="urn:lsid:plazi:treatment:43284262FFEDFFAC5AB6FDEB41BFC914:CE5EA5AFFFEDFFAC5B8AFCA641D4CF54" box="[436,498,771,796]" country="Vietnam" municipality="Phu Quoc National Park" name="Dang" pageId="114" stateProvince="Kien Giang">Dang</location>
430
</emphasis>
(
<collectionCode box="[566,637,770,796]" country="Viet Nam" httpUri="http://grbio.org/cool/tj07-dt2h" name="Institute of Tropical Biology" pageId="114" type="Herbarium">VNM</collectionCode>
); in the same location,
<quantity box="[904,977,770,797]" metricMagnitude="2" metricUnit="m" metricValue="4.05" pageId="114" unit="m" value="405.0">
<elevation box="[904,977,770,797]" metricMagnitude="2" metricUnit="m" metricValue="4.05" pageId="114" unit="m" value="405.0">405 m</elevation>
</quantity>
elev.,
<date box="[1054,1248,770,796]" pageId="114" value="2019-10-11">
<collectingDate box="[1054,1248,770,796]" pageId="114" value="2019-10-11">11 October 2019</collectingDate>
</date>
,
<emphasis italics="true" pageId="114">
<collectorName box="[1261,1376,771,797]" pageId="114">Dang V.S.</collectorName>
,
<collectorName box="[1389,1451,771,796]" pageId="114">Dang</collectorName>
430a
</emphasis>
(
<collectionCode box="[207,278,806,832]" country="Viet Nam" httpUri="http://grbio.org/cool/tj07-dt2h" name="Institute of Tropical Biology" pageId="114" type="Herbarium">VNM</collectionCode>
)
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection pageId="114" type="distribution">
<paragraph blockId="114.[136,1452,734,1372]" box="[189,932,842,868]" pageId="114">
<emphasis bold="true" box="[189,345,842,868]" pageId="114">Distribution:</emphasis>
—Campuchia,
<collectingCountry box="[514,616,842,868]" name="Thailand" pageId="114">Thailand</collectingCountry>
, and
<collectingCountry box="[674,769,842,868]" name="Vietnam" pageId="114">Vietnam</collectingCountry>
(
<collectingRegion box="[784,920,842,868]" country="Vietnam" name="Kien Giang" pageId="114">Kien Giang</collectingRegion>
).
</paragraph>
<paragraph blockId="114.[136,1452,734,1372]" pageId="114">
<emphasis bold="true" box="[189,428,878,904]" pageId="114">Habitat &amp; Ecology:</emphasis>
—Growing in the shade of evergreen forest or the edge of the forest at
<quantity box="[1260,1390,878,905]" metricMagnitude="2" metricUnit="m" metricValue="4.0" metricValueMax="5.0" metricValueMin="3.0" pageId="114" unit="m" value="400.0" valueMax="500.0" valueMin="300.0">300500 m</quantity>
elev.
<taxonomicName box="[136,399,914,940]" class="Magnoliopsida" family="Rubiaceae" genus="Lasianthus" kingdom="Plantae" order="Gentianales" pageId="114" phylum="Tracheophyta" rank="species" species="repoeuensis">
<emphasis box="[136,399,914,940]" italics="true" pageId="114">Lasianthus repoeuensis</emphasis>
</taxonomicName>
was collected from the forest habitat dominated by species
<taxonomicName authority="Airy Shaw (1972: 356)" authorityName="Airy Shaw" authorityPageNumber="356" authorityYear="1972" class="Magnoliopsida" family="Phyllanthaceae" genus="Antidesma" kingdom="Plantae" order="Malpighiales" pageId="114" phylum="Tracheophyta" rank="species" species="laurifolium">
<emphasis box="[1073,1325,914,940]" italics="true" pageId="114">Antidesma laurifolium</emphasis>
Airy Shaw (1972: 356)
</taxonomicName>
,
<taxonomicName authority="Blume (1826: 685)" authorityName="Blume" authorityPageNumber="685" authorityYear="1826" box="[285,760,950,977]" class="Magnoliopsida" family="Primulaceae" genus="Ardisia" kingdom="Plantae" order="Ericales" pageId="114" phylum="Tracheophyta" rank="species" species="sanguinolenta">
<emphasis box="[285,534,950,976]" italics="true" pageId="114">Ardisia sanguinolenta</emphasis>
Blume (1826: 685)
</taxonomicName>
,
<taxonomicName authority="(Roxb.) Merr. (1952: 229)" authorityName="Merr." authorityPageNumber="229" authorityYear="1952" baseAuthorityName="Roxb." box="[774,1304,950,977]" class="Magnoliopsida" family="Rubiaceae" genus="Lasianthus" kingdom="Plantae" order="Gentianales" pageId="114" phylum="Tracheophyta" rank="species" species="hirsutus">
<emphasis box="[774,995,950,976]" italics="true" pageId="114">Lasianthus hirsutus</emphasis>
(Roxb.) Merr. (1952: 229)
</taxonomicName>
,
<taxonomicName authority="Poir. (1804: 298)" authorityName="Poir." authorityPageNumber="298" authorityYear="1804" class="Magnoliopsida" family="Phyllanthaceae" genus="Phyllanthus" kingdom="Plantae" order="Malpighiales" pageId="114" phylum="Tracheophyta" rank="species" species="reticulatus">
<emphasis italics="true" pageId="114">Phyllanthus reticulatus</emphasis>
Poir. (1804: 298)
</taxonomicName>
,
<taxonomicName authority="Pierre ex Pit. (1924: 359)" authorityName="Pit." authorityPageNumber="359" authorityYear="1924" box="[459,1009,986,1013]" class="Magnoliopsida" family="Rubiaceae" genus="Psychotria" kingdom="Plantae" order="Gentianales" pageId="114" phylum="Tracheophyta" rank="species" species="cambodiana">
<emphasis box="[459,724,986,1012]" italics="true" pageId="114">Psychotria cambodiana</emphasis>
Pierre ex Pit. (1924: 359)
</taxonomicName>
,
<taxonomicName authority="Scheff. (1885: 23)" authorityName="Scheff." authorityPageNumber="23" authorityYear="1885" class="Magnoliopsida" family="Annonaceae" genus="Rauwenhoffia" higherTaxonomySource="GBIF" kingdom="Plantae" order="Magnoliales" pageId="114" phylum="Tracheophyta" rank="species" species="siamensis">
<emphasis box="[1019,1288,986,1012]" italics="true" pageId="114">Rauwenhoffia siamensis</emphasis>
Scheff. (1885: 23)
</taxonomicName>
,
<taxonomicName authority="Blume" authorityName="Blume" box="[186,399,1022,1048]" class="Magnoliopsida" family="Annonaceae" genus="Uvaria" kingdom="Plantae" order="Magnoliales" pageId="114" phylum="Tracheophyta" rank="species" species="rufa">
<emphasis box="[186,319,1022,1048]" italics="true" pageId="114">Uvaria rufa</emphasis>
Blume
</taxonomicName>
(1828: 13c),
<taxonomicName authority="Hook. &amp; Arn. (1837: 199)" authorityName="Hook. &amp; Arn." authorityPageNumber="199" authorityYear="1837" box="[547,1124,1022,1048]" class="Magnoliopsida" family="Apocynaceae" genus="Strophanthus" kingdom="Plantae" order="Gentianales" pageId="114" phylum="Tracheophyta" rank="species" species="divaricatus">
<emphasis box="[547,827,1022,1048]" italics="true" pageId="114">Strophanthus divaricatus</emphasis>
Hook. &amp; Arn. (1837: 199)
</taxonomicName>
,
<taxonomicName authority="Pierre (1893: 282)" authorityName="Pierre" authorityPageNumber="282" authorityYear="1893" class="Magnoliopsida" family="Erythroxylaceae" genus="Erythroxylum" kingdom="Plantae" order="Malpighiales" pageId="114" phylum="Tracheophyta" rank="species" species="cambodianum">
<emphasis box="[1134,1452,1022,1048]" italics="true" pageId="114">Erythroxylum cambodianum</emphasis>
Pierre (1893: 282)
</taxonomicName>
,
<taxonomicName authority="Mull. Arg. (1866: 621)" authorityName="Mull. Arg." authorityPageNumber="621" authorityYear="1866" box="[352,839,1058,1085]" class="Magnoliopsida" family="Euphorbiaceae" genus="Croton" kingdom="Plantae" order="Malpighiales" pageId="114" phylum="Tracheophyta" rank="species" species="heterocarpus">
<emphasis box="[352,583,1058,1085]" italics="true" pageId="114">Croton heterocarpus</emphasis>
Müll.Arg. (1866: 621)
</taxonomicName>
,
<taxonomicName authority="(Hance) Merr. &amp; L. M. Perry (1938: 107)" authorityName="Merr. &amp; L. M. Perry" authorityPageNumber="107" authorityYear="1938" baseAuthorityName="Hance" class="Magnoliopsida" family="Myrtaceae" genus="Syzygium" kingdom="Plantae" order="Myrtales" pageId="114" phylum="Tracheophyta" rank="species" species="bullockii">
<emphasis box="[849,1059,1058,1085]" italics="true" pageId="114">Syzygium bullockii</emphasis>
(Hance) Merr. &amp; L.M.Perry (1938: 107)
</taxonomicName>
,
<taxonomicName authority="(Tiegh.) M. C. E. Amaral (2007: 362)" authorityName="M. C. E. Amaral" authorityPageNumber="362" authorityYear="2007" baseAuthorityName="Tiegh." box="[203,924,1094,1120]" class="Magnoliopsida" family="Ochnaceae" genus="Campylospermum" kingdom="Plantae" order="Malpighiales" pageId="114" phylum="Tracheophyta" rank="species" species="striatum">
<emphasis box="[203,508,1094,1120]" italics="true" pageId="114">Campylospermum striatum</emphasis>
(Tiegh.) M.C.E.Amaral (2007: 362)
</taxonomicName>
,
<taxonomicName authority="Zoll. &amp; Moritzi (1846: 65)" authorityName="Zoll. &amp; Moritzi" authorityPageNumber="65" authorityYear="1846" box="[937,1447,1094,1121]" class="Magnoliopsida" family="Rubiaceae" genus="Ixora" kingdom="Plantae" order="Gentianales" pageId="114" phylum="Tracheophyta" rank="species" species="grandifolia">
<emphasis box="[937,1132,1094,1120]" italics="true" pageId="114">Ixora grandifolia</emphasis>
Zoll. &amp; Moritzi (1846: 65)
</taxonomicName>
,
<taxonomicName authority="B. C. Stone (1985: 10)" authorityName="B. C. Stone" authorityPageNumber="10" authorityYear="1985" box="[136,594,1130,1157]" class="Magnoliopsida" family="Rutaceae" genus="Glycosmis" kingdom="Plantae" order="Sapindales" pageId="114" phylum="Tracheophyta" rank="species" species="gracilis">
<emphasis box="[136,346,1130,1156]" italics="true" pageId="114">Glycosmis gracilis</emphasis>
B.C.Stone (1985: 10)
</taxonomicName>
,
<taxonomicName authority="(G. Forst.) Wight &amp; Arn. (1834: 448)" authorityName="Wight &amp; Arn." authorityPageNumber="448" authorityYear="1834" baseAuthorityName="G. Forst." box="[606,1272,1130,1156]" class="Magnoliopsida" family="Rutaceae" genus="Micromelum" kingdom="Plantae" order="Sapindales" pageId="114" phylum="Tracheophyta" rank="species" species="minutum">
<emphasis box="[606,853,1130,1156]" italics="true" pageId="114">Micromelum minutum</emphasis>
(G.Forst.) Wight &amp; Arn. (1834: 448)
</taxonomicName>
.
</paragraph>
<paragraph blockId="114.[136,1452,734,1372]" box="[189,885,1166,1193]" pageId="114">
<emphasis bold="true" box="[189,323,1166,1192]" pageId="114">Phenology:</emphasis>
—Flowering and fruiting from May to November.
</paragraph>
<paragraph blockId="114.[136,1452,734,1372]" box="[189,670,1202,1231]" pageId="114">
<emphasis bold="true" box="[189,405,1202,1228]" pageId="114">Vernacular name:</emphasis>
—Xú hưƠng nhiễu gân.
</paragraph>
<paragraph blockId="114.[136,1452,734,1372]" pageId="114">
<emphasis bold="true" box="[189,265,1238,1264]" pageId="114">Notes:</emphasis>
<taxonomicName box="[294,556,1238,1264]" class="Magnoliopsida" family="Rubiaceae" genus="Lasianthus" kingdom="Plantae" order="Gentianales" pageId="114" phylum="Tracheophyta" rank="species" species="repoeuensis">
<emphasis box="[294,556,1238,1264]" italics="true" pageId="114">Lasianthus repoeuensis</emphasis>
</taxonomicName>
was described in 1924 by Pierre ex Pitard (
<emphasis box="[1041,1174,1238,1264]" italics="true" pageId="114">Pierre 1257</emphasis>
). This species can easily be recognized from other species of
<taxonomicName box="[545,668,1274,1300]" class="Magnoliopsida" family="Rubiaceae" genus="Lasianthus" kingdom="Plantae" order="Gentianales" pageId="114" phylum="Tracheophyta" rank="genus">
<emphasis box="[545,668,1274,1300]" italics="true" pageId="114">Lasianthus</emphasis>
</taxonomicName>
in having lanceolate to oblong-elliptic leaves, secondary veins 1416 on each side of midrib, stipules broadly triangular, bracts extremely short, hairy, calyx obconical, and fruits globose, crowned by calyx lobes.
</paragraph>
</subSubSection>
</treatment>
</document>